can this clear a green tank ?

This product will not remove the green algae from the tank. It will be better to clean the tank, and then use green away, or algae minus products in the freshly cleaned tank. those products will keep the algae from growing. This product will make the water more clear by combining small contaminating particles in the water and then those gets filtered out.

Can this be used with an under gravel filter

I have an under gravel filter & use Tetra Crystal Water. Have used it for 3 years without any problem. Hope this helps.

Will this help with white bits float in my fresh water tropical tank

My not tropical fish sorry can not answer your question.

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Tetra Crystal Water Clarifier, 100 ml

Product ID: 50040062

Details

Brand
Tetra
Item form
Liquid
Item weight
0.1 Kilograms
Liquid volume
100
Number of Packs
1

🌿Safe for all freshwater fish & plants

💧Crystal clear water within 6-12 hours

⏱️Visible results in 2-3 hours

Description

💎 Elevate your aquarium game with crystal-clear confidence!

FAST ACTING CLARITY - Watch your aquarium transform with visible effects in just 2-3 hours—no more waiting around!
COMPACT CONVENIENT - Available in 100ml and 250ml sizes—perfect for every tank size and lifestyle.
ULTIMATE CRYSTAL CLEAR - Achieve pristine, showroom-quality water clarity within 6-12 hours—your fish deserve the best view.
POWERFUL PARTICLE BINDING - Binds tiny clouding particles into larger ones for easy filtration—keeping your tank sparkling effortlessly.
UNIVERSAL FRESHWATER SAFETY - Formulated to be safe for all freshwater inhabitants, including delicate fish and plants—peace of mind guaranteed.

Tetra Crystal Water Clarifier is a fast-acting liquid treatment designed to clear clouded freshwater aquariums safely and effectively. It binds microscopic particles into larger clumps for easy filtration, delivering visible clarity within hours and full crystal-clear water in under half a day. Suitable for all freshwater fish and plants, this 100ml formula ensures your aquatic environment looks pristine and healthy, making it a must-have for any serious aquarium enthusiast.

Specifications

ASIN	B005P7ES8S
Allergen Information	Allergen-Free
Best Sellers Rank	12,038 in Pet Supplies ( See Top 100 in Pet Supplies ) 141 in Aquarium Water Treatments
Brand Name	Tetra
Customer Reviews	4.6 4.6 out of 5 stars (393)
Global Trade Identification Number	04004218144071
Included Components	See Description
Item Form	Liquid
Item Type Name	Tetra CrystalWater, for Crystal Clear Water Fish Tank, 100 ml
Item Weight	0.1 Kilograms
Liquid Volume	100 Millilitres
Manufacturer	TEZSY
Manufacturer Part Number	T272
Model Number	T272
Number of Items	1
Number of Packs	1
Pet Type	Fish
Product Warranty	Manufacturer Fault
Target Species	Freshwater Pond Fish
Unit Count	100.0 millilitre

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